Cultivator-blade.



J. R. PORTER. CULTIVATOR BLADE. APPLICATION FILED AUGJB. l9l5.

Patented June 25, 1918.

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' MICHAEL, 0F BUFFALO, NEW YORK.

cuLrivAron-BLAnE.

auser.

To all whom z'tgnay concern:

Be it knowfi that I, Jnssn R. PORTER, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Cultivator- Blades, of which the following is a specification.

This invention relates to a r cultivator blade for digging and finely dividing or disintegrating the earth of a farm preparatory to planting seed in the same and more particularly to a machine for this purpose which is operated by power and designed to cover a comparatively large area durlng one run but which can also be operated by animal power and designed to cover asmaller area. i a It is the object of this invention to produce a cultivator blade for this purpose which will thoroughly and eifectually di up the ground or earth. and thoroughly pu verize or reduce the same suitable for planting, and which permits of digging up a portion of the sub-soil at the same time that the surface soil is being dug up. w

This application is a division of an application filed by myself July 22, 1912, and serially numbered 710,748.

In the accompanyin drawings:

Figure 1 is a side e evation of a cultivator provided with blades constructed in accordance with my invention. Fig. 2 is a fragmentary longitudinal section, on an enlarged scale, of a digger belt provided with a plurality of blades containing my invention. Fig. 3 is a fragmentary vertical transverse section showing one blade embodying invention in the act of digging in the sol.

Similar characters of reference indicate corresponding parts throughout the several news.

My improved cultivator blade may be used on machines of various constructions but, as shown in the drawings the same forms part of a machine comprising a carriage having a main frame 1, wheels 2 and 3 supporting the front and rear parts of the frame a motor 4 mounted on the frame, and a chain belt 5 passing around a driving sprocket wheel 6 on the engine shaft and a driven sprocket Wheel 7 011 the axle 3 Of the r r heels.

Specification of Letters Patent. Patented June 25,

tfill application filed July 22, wig, Serial No. 710,743. Divided and this application filed August 1915. Serial No. 47,750;

9 represents a plurality of blades, tools, bits, cutters or diggers which embody my invention and each of which is preferably constructed of sheet steel and curved so that upon engaging its outer or loweredge with the earth. theconcave side of the same faces toward the ground which is to be operated on or forwardly relatively'to the direction of movement of the blade. I-

As shown in Figs. 2 and 3, each of these cutter or diggerblades has its outer or operative edge serrated or toothed and each tooth having an inclined cutting edge whereby the several teeth enter the earth gradually with a shearing action which enables the same to be driven and efiect the digging operation with less power than if the cutting edge of the digger were straight or continuous. Furthermore, by thus constructing the digger blade with a plurality of teeth or serrations the earth is not only dug up and loosened but the same is also disintegrated or pulverized so that the soil is properly tilled and suitable for planting without necessitating subsequent use of a harrow or similar implement for this purpose.

Each of these digging bladesis mounted on the front side of a stock or supporting body 11 preferably constructed in the form of a horizontal bar which is arranged transversely in the machine. The several digger bars or stocks in each digger section are pivotally connected with one another so as to practically form an endless belt, chain or apron which is continuously rotated while the machine is in operation and moving over the ground so that the several digger blades are brought successively into engagement with the earth with a downward and rearward scooping action and the digging operation progresses as the machine advances. The preferred means for thus pivotally connecting the several digger bars or stocks which are shown in the drawings comprise a plurality of links 12 each of which is pivotally mounted at its opposite ends on reduced shanks 13 formed at the corresponding ends of two adjacent digger bars. 'llwo series of such links are employed for connecting the opposite ends, respectively, of the several digger bars and the links of each series are staggered or 0E set alternately gers are arranged under the front and rear parts ofthe main frame. Theupper or drivingsprocket wheels 14 of the digger belts are mountedon horizontal upper driven shafts 17which are journaled insuitable bearings; on vertically movable adj ustin frames 18 which turn on the axle 8. I

" 'The lower sprocket wheels 15 supporting the lower turns of'the digger belts are journaled on horizontal transverse shafts 18 which'latter are supported by means of adjusting hangers 59 connected with the adjustingnfraines 18. The upper andlower shafts 17', 18 of each digger belt are connectedby a'li-nk 19 and each blade stock is provided with a roller 20 which runs over the side of this link for guiding the respective digger belt.- 'Motion maybe transmittedf-rointhe motor 4 to the digger heltsby any suitable-means. i T'lieblades of thebelts pass downwardly andrearwardly around the lower sprocket wheels and dig up the soil and then idly pass upwardly and forwardly around the upper sprocket wheels, this operation continuing as the machine xvpasses over the ground.

It is desirable, to dig up a part of the subsoil of the earth and mix the sainewith the copies of this patent may-be obtained. for

- -ger'-is constructed, as shown in Fig- 3' 'with a central tooth 21 which is comparatively long and adapted to enter the sub-soil during'the'cultivating or plowing operation and a plurality of comparatively short teeth 10 arranged on opposite sides of the long tooth and adapted to engage only with the surface soil of the ground or earth which is being cultivated. By using this form of cutter blade or digger the cultivator when operating upon the earth will-dig up a portion of the sub-soil owing toits greatei penetration and lift the same so that it becomes mixed with the previously cultivated surface soil, thereby gradually increasing the depth of the soil which is suitable for planting.

Furthermore, by thus employing a subsoil tooth'on each blade in addition to the surface soil teeth-which have less penetration a drainage groove or channel is cut at intervals in the sub-soil below the stratuni of surface soil which operates to drain the surplus moisture from the surface soil and maintain the same in-the best condition for promoting the growth of the seed which has been planted in the same.

I claim asiny invention:

A rotary earth Workingimplement comprising a plurality of blades arranged in an endless series, each blade having a transverse roW of teeth, the tooth in the central part of the row being comparatively long while the other teeth on opposite sidesof the central part of. thesaid row of teeth are shorter than said long tooth.

JESSE R. PORTER.

five cents eaclyby addressingthe Commissioner of'Patents, washington, I). 0. 

